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| author | Pavel Shilovsky <pshilov@microsoft.com> | 2017-04-25 11:52:29 -0700 |
|---|---|---|
| committer | Steve French <smfrench@gmail.com> | 2017-05-02 14:57:34 -0500 |
| commit | ccf7f4088af2dd6733bfcbc40b488e2484345ae5 (patch) | |
| tree | e36e26b596216f44e08266913ae9fd5d7a0ebc64 /fs/cifs/cifsproto.h | |
| parent | 29bb3158cf6a5ad7b3521d1229552f375107a58c (diff) | |
| download | linux-stable-ccf7f4088af2dd6733bfcbc40b488e2484345ae5.tar.gz linux-stable-ccf7f4088af2dd6733bfcbc40b488e2484345ae5.tar.bz2 linux-stable-ccf7f4088af2dd6733bfcbc40b488e2484345ae5.zip | |
CIFS: Add asynchronous context to support kernel AIO
Currently the code doesn't recognize asynchronous calls passed
by io_submit() and processes all calls synchronously. This is not
what kernel AIO expects. This patch introduces a new async context
that keeps track of all issued i/o requests and moves a response
collecting procedure to a separate thread. This allows to return
to a caller immediately for async calls and call iocb->ki_complete()
once all requests are completed. For sync calls the current thread
simply waits until all requests are completed.
Signed-off-by: Pavel Shilovsky <pshilov@microsoft.com>
Signed-off-by: Steve French <smfrench@gmail.com>
Diffstat (limited to 'fs/cifs/cifsproto.h')
| -rw-r--r-- | fs/cifs/cifsproto.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/cifs/cifsproto.h b/fs/cifs/cifsproto.h index 97e5d236d265..e49958c3f8bb 100644 --- a/fs/cifs/cifsproto.h +++ b/fs/cifs/cifsproto.h @@ -535,4 +535,7 @@ int __cifs_calc_signature(struct smb_rqst *rqst, struct shash_desc *shash); enum securityEnum cifs_select_sectype(struct TCP_Server_Info *, enum securityEnum); +struct cifs_aio_ctx *cifs_aio_ctx_alloc(void); +void cifs_aio_ctx_release(struct kref *refcount); +int setup_aio_ctx_iter(struct cifs_aio_ctx *ctx, struct iov_iter *iter, int rw); #endif /* _CIFSPROTO_H */ |